Access Based Enumeration on Windows 7
Access Based Enumeration (ABE) is a well-hidden feature even in Windows Server, where it can be configured per share, but only in the Share and Storage Management MMC and not when right-clicking a folder in Explorer. Thanks to the shared code base ABE is available in Windows 7, too, although hidden even better. Let’s find out how to enable it anyway.
First we need a share to play around with. I set up a shared folder with three subfolders. When I access it over then network, everything looks as expected:
Next we remove permissions on one of the subfolders so that users do not have read access any more. We do that with SetACL Studio, of course!
Then we download the free tool ShrFlgs and issue the following command in an elevated prompt:
D:\>ShrFlgs.exe \\localhost\test /abe true /forreal ShrFlgs V01.00.01cpp Joe Richards (firstname.lastname@example.org) February 2005 Share: test Path : R:\ Remark : Max Use : Unlimited Current Use: 1 SDDL : Flags Manual Client Side Caching Exclusive Opens Allowed Force Delete NOT Allowed Namespace Caching NOT Allowed Access Based Enumeration The command completed successfully.
Finally we check again in Explorer, and voilà, the directory sub2 is gone: